一六銀行[ichirokuginkou] pawnshop
一六勝負[ichirokushoubu] gambling
五臓六腑[gozouroppu] the internal organs
三十六計[sanjuurokkei] the 36 (ancient Chinese military) strategies (of which the last resort was said to be beating a retreat)
三面六臂[sanmenroppi] rush of business

四六時中[shirokujichuu] around the clock
十六[juuroku] 16
十六音符[juurokuonpu] 16th note
十六夜[izayoi] sixteen-day-old moon
上方贅六[kamigatazeiroku] people of the Kyoto area

双節棍[nunchaku] nunchaku (two linked fighting sticks)
一双[issou] pair (esp. of folding screens)
一卵性双生児[ichiranseisouseiji] identical twins
双紙[soushi] written work (esp. a bound text, as opposed to a scroll)
自己双対[jikosoutsui] self dual

双刃[moroha] double-edged
双暗車[souansha] twin propellers
双殻類[soukakurui] bivalves
双眼[sougan] both eyes

雙六[sugoroku] child's dice game